Slide buckle



Patented Aug. 25, 1931 UNITED STATES PATENT CFFICE] cimntssfulvroseaovu, or wA'mnneay, comner'x'cnr, ASSIGNOR r inns su reme COMPANY,01? oAKvILLE, CONNECTICUT", A CORPORATION or CONNECTICUT SLIDE BUCKLEapplication and lay' az, .1929. Serial No. 864,967.

This invention relates to a slide buckle such as is used on suspendersand the like, particularly for use on shoulder straps of overalls, andhas for an object to provide 3 a buckle of-this type in which there areno production of garments. Another object of the inventi n is to providea buckle which will lie perfectly flat. does not require welding orsimilar operations and which can be made on anautomatic machine, andtherefore, can be made cheaper than some of the two piece "slides now onthe market. It 'is still another object of the invention to provide aslide of this character which will have a firmer grip on the strap andtherefore will be less likely to slip under strain.

With the foregoing and 0th r objects in 'view. the "invention" consistsin certain novel features of construction and arrangements of parts aswill more fully disclosed in connection with the accompanying drawings.

In these drawings r Fig. 1 is a side elevation of the buckle showing myimproved construction and with the central clip in section. v

Fig. 2 is a transverse section substantially on line2'' 2 of Fig. "Fig.3is a view similar to Fig. 1 showing a slightly modified'construction. pFig. 4 is a transverse section substantially on line 4+4 ofFig. 3. V

Fig. '5 is a side elevation of a still further modification. 1

F ig. 6 is a transverse section substantially on line 66 of 5.

Fig. 7 is a side elevationof another modifica-tion. 7 v A,

Fig. 8 is a transverse section substantially on line '88 of Fig. 7. v

Fig. 9 is an edge View of the buckle shown in Fig. 7

Fig. 1-0 is a side elevation of a still further 50 modification.

7 wire of Fig. his a transverse; section substantially on linellll ofFig. 1Q. r

Fig. 12 is a side elevation of still another modification, and

Fig. 13 is a transverse section substantially. on line 13*13 of Fig. 12.j

eferr ing to the drawings it will be seen that all of the modificationsshown are of the same general construction, the modifications showingchanges only in the shape of the out-a er side bars of the buckle.Referring to Figs. 1 and 2 it will be seen that the buckle ismade in onepiece of wire folded uponitselfat its midlength as shown at 14 andextending side by side to form a portion of; a central bar. The twoportions of wire are then extended outwardly in opposite directions .toform end bars 16. and then extend arallel with the central bar 15 andspaced aterally therefrom to form side bars 17.;

5 v They then extend inwardly toward each other to provide end bars 18and thengside by side as shown at19 to provide a second center ,barportion in alignment with the central bar portion 15.. The free endsotthe bars 19 are-- connected together and to the centralbar portion bya tubular metal clip 20 which may be a strip of sheet metal-wrappedaround the elements as shown. This clip rigidlysecures the ends of thebars 19 togeth= er aswell as the two po rtionsfof the central bar, andmakes a veryv rigid construction without the necessity of any welding orsimilar operations. The wire shown in the drawings is either square orrectangular in cross-section, but obviously could bemade of eithercircular or other suitable shape. The square or rectangular wire ispreferred as the edges give a better grip on the material of the strapso that the buckle is 'lesslikelyto slip under load. The surface of -thewire may be smooth or it may be knurled as indicated by the lining onthe drawings. The knurling also increases the ip 011 h apv Referring toFigs. 3 and 4 this buckle is the same as isshown in Figs. 1 and'2,except that the side bars 2i are flattened .at their central portions asindicated at 22. This flattening decreases the width of the two loopsformed 100 In Figs. 7, 8 and 9 the buckle is formed thesame as shown inFigs. 1 and 2, then the side bars 17 are humped adjacent their oppositeends as shown at 25 to put a bend in the strap and still further reducethe liability to slip. This bend increases the angle of the strap aboutthe bars as the strap passes through the buckle and therefore, increasesthe holding effect.

In the form shown in Figs. 10 and 11 the side bars are swedged adjacenttheir outer edges as indicated at 26 to thus reduce the thickness of thebars and increase their width, but leaving their inner edges 27 ofsubstantially the full thickness of the wire. This makes a bar which isvery rigid in both directions and which also has a very firm grip on thestrap as the holding edge of the wire remains the full size. This inneredge, and in fact the entire surface of the wire, may be knurled ifdesired at the time of swedging. This construction improves theappearance of the buckle and gives a stronger frame with a smaller wirethan would a mere flattening of the full width of the wire.

In Figs. 12 and 13 the side bars are provided with a series of flattenedsurfaces 28 leaving a series of notches 9.9 and 30 in its opposite sideedges giving a sort of sawtooth effect, which gives a very firm hold onthe ma terial of the strap. The flat surfaces may also be left withsmall projections 31 which engage the surface of the material of thestrap and still further increase the holding effect.

These projections or lugs 31 may also be used on the flat surfaces ofthe forms of Figs. 3 and 5.

It will, of course, be understood that while only the surfaces of thebuckle of Figs. 1 and 2 are shown knurled, the surfaces of the otherforms may be knurled if desired. These buckles may be formed entirelyautomatically, and have great strength without the necessity of weldingor any other similaroperations. It also will be apparent they have noeyes to rub on a shirt, to cut it, or to give discomfort to the wearer.There is no separate slide on the buckle to interfere with the attachingof the buckle to a suspender, thus making it quicker and easier tohandle, and it will work equally well either side up, and therefore, maybe applied in this way.

Having thus set forth the nature of my invention, what I claim is:

1. A slide buckle comprising a piece of wire folded upon itself at itsmidlength to form a portion of a central bar, the two side portions ofthe wire then extending in opposite directions from said central bar toform end bars and then substantially parallel to the central bar onopposite sides thereof to form the side bars of the buckle, said sidebars being swedged to provide a plurality of flat faces separated bynotches at the ends of said faces at each edge of the bars andprojections between the notches, the sides being then turned inwardlytoward each other to form the opposite end bars and then inwardly towardthe free end of the first central bar to form another portion inalignment therewith, and means for connecting together the free ends ofthe two portions of the central bar.

2. A slide buckle comprising a single piece:

portion of a central bar and then extendingoutwardly in oppositedirections therefrom and substantially parallel to the central bar toform loops on opposite sides thereof, the free ends of the wireextending inwardly side by side from the opposite end of thebuckletoward the free end of the first portion of its central bar toform another portion of the central bar in alignment therewith, and asleeve extending substantially less than the full length of the centralbar and embracing the inner opposed ends of the end portions of thecentral bar to secure them together and said sleeve being of greaterdiameter than the central bar whereby to enlarge the central barintern'lediate its ends and to allow at the ends of the sleeve for theseams of a strap.

3. A slide buckle comprising a piece of substantially rectangular wirefolded upon itself at its midlength to form a portion of a central bar,the two side portions of the wire then extending in opposite directionsfrom said central bar to form end bars and then substantially parallelto the central bar on opposite sides thereof to form the side bars ofthe buckle, said side bars being swedged to decrease their thickness andincrease their width, the sides being then turned inwardly toward eachother to form the opposite end bars andthen inwardly toward the free endof the first central bar to form another portion in alignment therewith,and a sleeve embracing the opposed. inner ends of the two portions ofthe central. bar to secure them together.

4. A slide buckle comprising a single piece of wire folded upon itselfto form a portion of a central bar and then extending outwardly inopposite directions therefrom and substantially parallel to the centralbar to form side bars of the buckle, the central'portions of said sidebars, being swedged wherebyito decease their thickness and increasetheir width, the free ends of the wire, extendin inwardly side by sidefrom the opposite en of the buckle toward the free end of the firstportion of the central bar to form another portion of the central bar inalignment there with, and a sleeve extending substantially less than thefull lengthof the central bar and the swedged portions of the side barsand embracing the inner opposed ends of the portions of the central barto secure them to gether.

5. A slide buckle comprising a single piece of a substantiallyrectangular wire folded upon itself to form a portion of a central barand then extending outwardly in opposite directions therefrom andsubstantially parallel to the central bar to form loops on oppositesides thereof, the outer bar of the loop being swedged at its outer edgeto reduce the thickness of this edge and increase the width of the barleaving the inner edge of the bar of substantially its originalthickness, the free ends of said bars extending inwardly side by sidetoward the free end of the central bar portion to provide anotherportion in alignment therewith.

6. A slide buckle comprising a central bar portionextendinglongitudinally and a pair of rectangular side bars spacedlaterally therefrom on opposite sides thereof and connected to thecentral bar portion at their ends to form loops, said side bars beingswedged at their outer edges to reduce the thickness of the outer edgeofthe bar and increase its width leavingthe inner edge of the bar ofsubstantially its full thickness.

7. A slide bucklecomprising a wire forming a central bar and side barsspaced therefrom on opposite sides thereof, and connected to the centralbar portion at their ends to form loops, said side bars being swedged attheir outer edges toreduce the thickness of the outer edges of the barsand leaving the inner edges of the bars of substantially their fullthickness.

In testimony whereof I afiix my signature.

CHARLES A. MOSGROVE.

